Specifications

2-7
Programming the HP 71612 Series
Behavior at Power On
[SOURce [1]:] This is the top layer of the command structure and identifies the pattern
generator source sub-system.
PATTern This is the next layer and is the equivalent of setting the front panel
pattern selection field.
PRBS(n), These are the parameters required by the PATTern command keyword.
ZSUB(n)
NOTE Any optional commands are enclosed in square brackets [ ] and any
optional characters are shown in lower case.
A colon indicates a change of level in the command hierarchy.
Commands at the same level in the hierarchy may be included in the
same command line, if separated by a semi colon.
The bar symbol (I) indicates mutually exclusive commands.
To translate this into a command line you simply follow the same convention, however the
command line can be typed in several different ways. This depends on whether longform
or shortform is used. The following example gives three possible forms of the command
line all of which are perfectly acceptable.
In longform:
OUTPUT 718;“SOURCE1:PATTERN:SELECT PRBS7”
In shortform:
OUTPUT 718;“SOUR1:PATT:SEL PRBS7”
With optional commands removed:
OUTPUT 718;“PATTERN PRBS7”
It can be seen from the examples that longform is the most descriptive form of
programming commands in SCPI and will be used for the examples given in this manual.
Behavior at Power On
At power-on, the state of the registers and filters will be:
In normal operation, the enable state of the registers and transition filters will be
preserved through a power fail.